Modified GR and Helium Nucleosynthesis

Abstract

We show that a previously proposed cosmological model based on general relativity with non vanishing divergence for the energy-momentum tensor is consistent with the observed values for the nucleosynthesis of helium for some values of the arbitrary parameter $\alpha$ presented in this model. Further more values of $\alpha$ can be accommodated if we adopt the Randall-Sundrum single brane model.

5 pages

References in corpus (5)

• The Einstein Equations on the 3-Brane World
• New BBN limits on Physics Beyond the Standard Model from He4
• A New Nucleosynthesis Constraint on the Variation of G
• Precision Prediction for the Big-Bang Abundance of Primordial Helium
• Limits on Cosmological Variation of Strong Interaction and Quark Masses from Big Bang Nucleosynthesis, Cosmic, Laboratory and Oklo Data

Cited by in corpus (11)

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• The commutator algebra of covariant derivative as general framework for extended gravity. The Rastall theory case and the role of the torsion
• Kerr black hole surrounded by a cloud of strings and its weak gravitational lensing in Rastall gravity
• Structure Formation in Generalized Rastall Gravity
• Stochastic Einstein equations with fluctuating volume
• Analytical solutions of the geodesic equation in the space-time of a black hole surrounded by perfect fluid in Rastall theory
• $4$-index theory of gravity and its relation with the violation of the energy-momentum conservation law
• Generating exact polytropes in non-conservative unimodular geometries
• Non-minimal coupling inspires the Dirac cosmological model